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92 lines
2.5 KiB
JavaScript
92 lines
2.5 KiB
JavaScript
/*
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DynAPI Distribution
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CircleAnimation Class
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The DynAPI Distribution is distributed under the terms of the GNU LGPL license.
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requires: dynapi.functions.Math,dynapi.fx.Thread
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*/
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function CircleAnimation(dlyr) {
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this.Thread = Thread;
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this.Thread(dlyr);
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this.offsetX = 0;
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this.offsetY = 0;
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this.playing = false;
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this.radius = 100;
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this.angle = 0;
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this.setAngleIncrement(10);
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};
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var p = dynapi.setPrototype('CircleAnimation','Thread');
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p.setRadius = function (r) {
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this.hradius = this.vradius = r;
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};
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p.setHRadius = function (r) {
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this.hradius = r;
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};
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p.setVRadius = function (r) {
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this.vradius = r;
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};
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p.setAngle = function (a) {
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this.angle = dynapi.functions.degreeToRadian(a);
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};
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p.setAngleIncrement = function (inc) {
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this.angleinc = dynapi.functions.degreeToRadian(inc);
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};
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p.playAnimation = function () {
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this.playing = true;
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if (this.dlyr!=null) {
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this.offsetX = this.hradius*Math.cos(this.angle);
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this.offsetY = -this.vradius*Math.sin(this.angle);
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this.baseX = this.dlyr.x-this.offsetX;
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this.baseY = this.dlyr.y+this.offsetY;
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this.dlyr.invokeEvent("circlestart");
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}
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this.start();
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};
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p.stopAnimation = function () {
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this.playing = false;
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this.stop();
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if (this.dlyr!=null) this.dlyr.invokeEvent("circlestop");
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};
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p.run = function () {
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if (!this.playing || this.dlyr==null) return;
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this.angle += this.angleinc;
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this.offsetX = this.hradius*Math.cos(this.angle);
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this.offsetY = -this.vradius*Math.sin(this.angle);
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if (this.dlyr!=null) {
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this.dlyr.invokeEvent("circlerun");
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this.dlyr.setLocation(this.baseX+this.offsetX,this.baseY+this.offsetY);
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}
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};
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p.reset = function () {
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this.angle = this.offsetX = this.offsetY = 0;
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};
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p.generatePath = function(centerX,centerY) {
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if (centerX==null) centerX = this.dlyr!=null? this.dlyr.x : 0;
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if (centerY==null) centerY = this.dlyr!=null? this.dlyr.y : 0;
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var path = [];
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var i = 0;
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/* for (var a=this.angle;a<=this.angle+Math.PI*2;a+=this.angleinc) {
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path[i] = Math.round(centerX + this.hradius*Math.cos(a));
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path[i+1] = Math.round(centerY - this.vradius*Math.sin(a));
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i+=2;
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}*/
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if (this.angleinc>0)
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for (var a=this.angle;a<=this.angle+Math.PI*2;a+=this.angleinc) {
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path[i] = Math.round(centerX + this.hradius*Math.cos(a));
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path[i+1] = Math.round(centerY - this.vradius*Math.sin(a));
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i+=2;
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}
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else
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for (var a=this.angle;a>=this.angle-Math.PI*2;a+=this.angleinc) {
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path[i] = Math.round(centerX + this.hradius*Math.cos(a));
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path[i+1] = Math.round(centerY - this.vradius*Math.sin(a));
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i+=2;
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}
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return path;
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};
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